EEG Microstate Imbalance in Anti-LGI1 Encephalitis: A Correlation With Inflammation and Cognitive Dysfunction

IF 5.2 2区 医学 Q2 ENGINEERING, BIOMEDICAL
Xue Yang;Xiaotang Wang;Si Chen;Xiaxin Yang;Xiuhe Zhao
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Abstract

This study investigates changes in electroencephalogram (EEG) microstates in patients with anti-leucine-rich glioma-inactivated protein 1 (anti-LGI1) encephalitis and explores their correlation with inflammatory markers and cognitive function. Thirty patients with LGI1 encephalitis were compared to a control group of thirty healthy individuals, analyzing demographics, blood/cerebrospinal fluid (CSF) tests, and cognitive assessments. Each participant underwent at least 10 minutes of resting-state EEG recording. Microstate analysis and functional connectivity were performed using MATLAB’s EEGLAB toolbox, while standardized low-resolution brain electromagnetic tomography (sLORETA) was employed for microstate source reconstruction. Patients with anti-LGI1 encephalitis exhibited prolonged durations of microstates A, B, and C, reduced occurrence of microstate D, and increased transitions from C to A, with no significant changes in coverage. Microstate A demonstrated decreased activity in the anterior cingulate and lingual gyri. Functional connectivity analysis revealed enhanced slow-wave connectivity and diminished fast-wave connectivity in the frontal-parietal lobes. Correlation analyses showed that microstate A positively correlated with inflammatory indices such as the neutrophil-to-lymphocyte ratio (NLR), systemic inflammation index (SII), and systemic inflammatory response index (SIRI). In contrast, microstate D correlated with the derived neutrophil-to-lymphocyte ratio (dNLR). Microstates B and C inversely correlated with NLR and SII. Furthermore, the duration and coverage of microstate A, along with the transition probability from A to D, inversely correlated with Mini-Mental State Examination (MMSE) scores. Similarly, the AD/BC ratio in occurrence, duration, and coverage also negatively correlated with MMSE scores. These findings revealed alterations in EEG microstates in patients with LGI1 encephalitis, highlighting an imbalance in the AD/BC ratio associated with inflammatory processes and cognitive impairments.
抗lgi1脑炎的脑电图微态失衡:与炎症和认知功能障碍相关。
本研究探讨抗富亮氨酸胶质瘤失活蛋白1 (anti-LGI1)脑炎患者脑电图(EEG)微观状态的变化,并探讨其与炎症标志物和认知功能的相关性。将30例LGI1型脑炎患者与30名健康人的对照组进行比较,分析人口统计学、血液/脑脊液(CSF)测试和认知评估。每个参与者至少进行10分钟的静息状态脑电图记录。使用MATLAB EEGLAB工具箱进行微状态分析和功能连接,采用标准化低分辨率脑电磁断层扫描(sLORETA)进行微状态源重建。抗lgi1脑炎患者表现为微状态A、B和C持续时间延长,微状态D的发生减少,从C到A的过渡增加,覆盖范围无明显变化。微状态A显示前扣带和舌回活性降低。功能连通性分析显示,额顶叶慢波连通性增强,快波连通性减弱。相关分析显示,微状态A与中性粒细胞/淋巴细胞比值(NLR)、全身炎症指数(SII)、全身炎症反应指数(SIRI)等炎症指标呈正相关。相反,微状态D与衍生的中性粒细胞与淋巴细胞比率(dNLR)相关。微观状态B和C与NLR和SII呈负相关。此外,微状态A的持续时间和覆盖范围以及从A到D的转换概率与迷你精神状态检查(MMSE)分数呈负相关。同样,AD/BC的发生率、持续时间和覆盖率也与MMSE得分呈负相关。这些发现揭示了LGI1脑炎患者脑电图微观状态的改变,突出了AD/BC比例的不平衡与炎症过程和认知障碍相关。
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来源期刊
CiteScore
8.60
自引率
8.20%
发文量
479
审稿时长
6-12 weeks
期刊介绍: Rehabilitative and neural aspects of biomedical engineering, including functional electrical stimulation, acoustic dynamics, human performance measurement and analysis, nerve stimulation, electromyography, motor control and stimulation; and hardware and software applications for rehabilitation engineering and assistive devices.
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